Abstract: The present invention relates to devices and methods for the qualitative and/or quantitative detection of particles. In particular, the invention relates to devices for the detection of particles, comprising a reaction chamber formed within a chamber body between a first surface and a second surface, wherein the second surface is located opposite to the first surface, and one or more displacers, wherein the distance between the first surface and the second surface is variable via the one or more displacers at least in one or more parts of the surface area of the first surface and/or the second surface.

Abstract: The voltage surge protection device comprises at least one protection module designed to be connected to an electric switchgear apparatus. The protection module comprises at least one protective element for protection against voltage surges and separating means connected to at least one protective element to cause an electrical and/or mechanical separation representative of a fault of a protective element following an increase of temperature and/or electric current. The protection module comprises means for mechanical actuation connected to said separating means and comprising a mechanical control link. The electrical control link is placed in a tripped state representative of a fault of at least one protective element when said separating means have caused a separation.